Sm-6089

Transcript

VVABCCI ~~ An American-Standard Company SERVICE MANUAL MOTION 6089 MONITOR .. MM-21 OPERATION, INSTALLATION, AND MAINTENANCE INSTRUCTIONS Table of Contents Page Section I 1.1 1. 2 1. 3 1. 4 II 1-1 INTRODUCTION MOTION DETECTION ISLAND PROTECTION EQUIPMENT SPECIFICATIONS GENERAL OPERATING PARAMETERS 2-1 EQUIPMENT DESCRIPTION 2.1 2.2 2.3 2.4 July, 1978 A-78-500-2197-2 1-1 1-1 1-2 1-3/4 COMPONENT DESCRIPTION 2 .1.1 Terminal Connection 2 .1. 2 Signal Board 2.1.3 Detector Board 2.1.4 Island Board EXTERNAL EQUIPMENT CIRCUIT DESCRIPTION 2.3.1 Basic Components 2.3.2 Transmitter 2.3.3 Motion Receiver and Differentiator 2.3.4 Island Receiver 2.3.5 Vital Gate Logic and Relay Driver THEORY OF OPERATION 2.4.1 Signal Board 2.4.2 Detector Board 2.4.3 Island Board 2-1 2-1 2-2 2-2 2-3 2-3 2-5 2-5 2-5 2-5 2-5 2-7 2-8 2-8 2-10 2-12 UNION SWITCH & SIGNAL DIVISION WESTINGHOUSE AIR BRAKE COMPANY Swissvale, PA 15218 WABCD ~ Table of Contents Section III APPLICATION OF THE MOTION MONITOR MM-21 3.0 3.1 3.2 3.3 3.4 3.5 3.6 IV v VI VII GENERAL RULES FOR APPLYING ANY MOTION DETECTION DEVICE OPERATIONAL CONSIDERATIONS 3.1.1 Track Ballast 3.1.2 Stabilization of Track Characteristics Through Shunts 3.1.3 Types of Shunts ISLAND ZONE DEFINATION 3.3.1 Configuration of Island Protection Track Connections PARALLEL TRACK OPERATION MOTION MONITOR FREQUENCY SELECTION TRACK STRAP ADJUSTMENT BASIC CONNECTIONS 3-1 3-1 3-1 3-2 3-2 3-2 3-4 3-4 3-4 3-4 3-5 3-5 MOUNTING AND ADJUSTMENTS 4-1 4.1 4.2 4.3 4-1 4-1 4-2 MOUNTING CONNECTIONS ADJUSTMENT PROCEDURE FIELD MAINTENANCE 5-1 5.1 5.2 5.3 5-1 5-1 5-2 FUSE REPLACEMENT FIELD EQUIPMENT AND TESTS PERIODIC MAINTENANCE . PC BOARD REPAIR 6-1/2 PARTS LIST 7-1 J VIII 8-1/2 APPLICATIONS ii WABCD ~ LIST OF ILLUSTRATIONS FIGURE # PAGE 2-1 Motion Monitor Block Diagram 2-6 2-2 Signal Board Block Diagram 2-9 2-3 Detector Board Block Diagram 2-9 2-4 Island Board Block Diagram 2-10 3-1 Typical MM-21 Installation 3-3 3-2 Frequency Selection Chart for 3.Q/1000' 3-6 3-3 Frequency Selection Chart far 5.0./1000' 3-7 3-4 Frequency Selection Chart for lOn/1000' 3-8 3-5 External Wiring and Connections for a Simple MM-21 Installation 3-9 4-1 Typical MM-21 Installation 4-3 7-1 MM-21 Motion Monitor Assembly 7-3/4 7-2 MM-21 Motion Monitor Schematic Diagram 7-5/6 7-3 Signal P.C.B. Layout 7-11/12 7-4 Detector P.C.B. Layout 7-·17/18 7-5 Island P.C.B. Layout 7-22/23 iii ~I I-'· <: MM-21 MOTION MONITOR I. WABCO ~·'-""' SECTION I INTRODUCTION 1.1 MOTION DETECTION WABCO's Motion Monitor MM-21 is a solid state track overlay device which will detect train movements toward a highway crossing. The Motion Monitor detects train motion by continuously measuring track circuit status. A constant current is fed into the rails adjacent to the highway at the crossing. This current develops a rail-to-rail voltage proportional to the track circuit impedance. As a train proceeds toward the crossing, the moving shunt effect of the train's leading wheels decreases the impedance of the track circuit at the feed point (crossing) thus reducing the railto-rail voltage. The rate at which the impedance decreases is related to train speed and position within the warning zone along with several other factors including, but not limited to, length of warning zone, track rail impedance, and ballast resistance. Consequently, the distance from the highway crossing to the point of initial detection is directly proportional to train speed; i.e., the greater the speed the greater the distance. When a train operating within the MM-2l's approach limits has stopped or reverses, moving away from the crossing, the Motion Monitor will clear the crossing, permitting automotive traffic to resume. Likewise, the highway crossing is cleared after a train proceeds through the crossing and has receded to the point where the last car's wheels have cleared the island circuit. 1.2 ISLAND PROTECTION The Motion Monitor system includes protection for the island zone. A built-in receiver, which is connected to the rails on the opposite side of the highway from the track feed, continuously monitors the rail to rail voltage at that point. If a train shunt occurs in the vicinity of the crossing, the receiver input voltage will fall below the island receiver's threshold, thus detecting the presence of a train much as in a conventional AFO circuit. Receiver sensitivity is adjustable to accommodate a wide range of applications. 6089, p. 1-1 WABCD ~ 1.3 EQUIPMENT SPECIFICATIONS DC Input • • • . . . Current drain Rail current Frequency :I: 8.8 to 16.2VDC (0.5V P-P maximum Ripple*) . .. . 1% 207 & 230 Hz 390 & 405 Hz 570 & 630 Hz 207 & 230 Hz 390 & 405 Hz 570 & 630 Hz = = = = = = 1.9 Amps (nominal) 1.4 Amps (nominal) 1.2 Amps (nominal) 1.0 Amp 0.5 Amp 0.33 Amp Motion Monitor Island 207 & 230 Hz 390 & 405 Hz 570 & 630 Hz 12.28 Khz 15.00 Khz 20.00 Khz Modulation frequency • • Output loads • • • • • 52 Hz= 5 Hz Vital Relays Motion Monitor Relay • • • 400 Ohms (PN-150BH) Island Relay (optional) • • 400 Ohms (PN-150BH) Temperature Range . • (PN-150B} • -40°F to +160°F (-4ooc to +7o 0 c) Track Lead Resistance Transmitter Receiver . •. . • • No more than O.15 Ohms total . • • • • • No more than 0.50 Ohms total *If this value is greater than 0.5V p-p, a surge ripple filter must be used. (·See Section 2.3, External Equipment.) 6089, p. 1-2 WFIBCCI ~ 1.4 GENERAL OPERATING PARAMETERS In general, the Motion Monitor will perform over the ranges of parameters indicated in Table I although not all extreme limits may exist concurrently. Typical application data is covered in Section III. TABLE I Motion Sensing Warning Zone Warning Times Speed Range 600' min. to 3200' max. (183M to 975M) 20 seconds up 4 MPH to 100 MPH (6.4KPH to 160KPH) Track Characteristics Ballast Shunting Sensitivity 1.0 ohm/1000 ft. to "infinite" 0.0 to 0.06 ohms Response Time Detection Clearing 0.1 to 0.5 seconds Dependent on timer setting (6-36 seconds) Island Protection Length Ring by Maximum Car Span to 400 feet {121M) (0.9M to 4.6M) 3 to 15 ft. NOTE Operating characteristics depend upon the sum total effects of all system parameters. Therefore, the above values may not all apply simultaneously. 6089, p. 1-3/4 SECTION II EQUIPMENT DESCRIPTION The Motion Monitor Unit which is shown in Figure 7-1 and 7-2 is housed in a sheet metal case with an overall size of 10-1/4 inches (height} by 6 inches (depth) by 12 inches (length) (26 cm x 15.2 cm x 30.5 cm). The weight of the Motion Monitor is 17.5 pounds (7.9 Kg.) The case may be shelf, wall, or rack mounted. Seventeen terminals are provided for external connections. The case contains three printed circuit boards which are: 1. 2. 3. 2.1 Signal Board Detector Board · Island Board COMPONENT DESCRIPTION The Motion Monitor MM-21 is contained in a sheet metal case with AAR terminals provided.for external. connections. Two locking adjustments are conveniently located on the front panel and provide for the TIME adjustment (factory adjusted to 20 seconds) and the island SENSITIVITY adjustment. A 3 amp.· SLO-BLO fuse for circuit protection and two LED indicators provide a quick check of the condition of the unit. With no train shunting the rails of the track circuit, the ISLAND LED will be illuminated and the MOD CHECK LED will alternate on and off at a 5 Hz rate. Three printed circuit boards, the Signal Board, the Detector Board and the Island Board, contain the remainder of the components. 2.1.1 Terminal Connections Standard AAR terminals provide for the following external connections: Terminals· 1 3 2 5 6 4 7 8 9 - 11 10-12-14 11 - 13 15 - 17 16 Circuit Long Track Strap Short Track Strap XMTR to Track Coil (MM Relay) Battery Front~Heel-Back (MM Relay) IR Relay (Optional) RCVR to Track Spare 6089 I P• 2-1 WABCD ~ 2.1.2 Signal Board The Signal Board consists of the following: 2.1.3 a. A vital, level controlled transmitter oscillator that establishes the frequency of the unit. These frequencies are: 207 Hz, 230 Hz, 390 Hz, 405 Hz, 570 Hz, and 630 Hz. b. Preamplifier with factory adjusted gain, fed from-the transmitter oscillator, provides the drive to the power amplifier, and controls the output current. c. Transmitter constant current power amplifier with one output lead, coupled to the rail by means of a series tuned track filter. d. A low frequency modulation transformer coupled to a 5 Hz multivibrator that provides the self check capability. e. Motion receiver tuned input circuit feeding a power amplifier and voltage transformer to provide input to the differentiator, no-motion receding train oscillator, and the vital gate. Detector Board The Detector Board consists of the following: 6089, p. 2-2 a. Voltage doubler and vital filter feeding the differentiating capacitor, which couples the self-check modulation signal to an oscillator and changes in signal strength due to train motion. b. Oscillator which generates an output when there is no motion (train stopped) or when a receding train is detected. c. Vital gates. d. Low frequency detector, amplifier and rectifier. e. Island relay and motion monitor relay drivers. f. Timer circuit. WABCCJ ~ 2.1.4 Island Board The Island Board consists of the following: 2.2 a. The transmitter circuit consisting of a carrier and a modulation oscillator driving a unity gain amplifier and the high pass filter output stage. 6. 1he ~~ceiVer input circuit,consisting of a high-Qbandpass filter, and a demodulator driving an amplifier which, in turn, drives a negative DC maker to power an oscillator stage •.. EXTERNAL EQUIPMENT The following additional equipment is required for proper operation of the Motion.Monitor. . 1. Motion Monitor _Relay (Type PN-150BH, Part No. N322511-007) This relay is de-energized when a train approaches the crossing within the detection range at a speed not lower than the minimum detectable speed. The relay is also de-energized anytime a train is within the island circuit which is defined as the length of track between the two sets of track connections. The posit.ive control of the relay coil is connected to terminal 6 of the Motton Monitor, and the negative control to terminal 8 of the Motion Monitor. The relay is also an integral component of the timing circuit and requires the use of one set of FB contacts. The heel is returned to terminal 12, the back to terminal 14, while the front is returned to terminal 10. 2. Island Relay (Type PN-150BH, Part No. N322511-007) or (Type PN-lSOB, Part No. N322500-901) Some appliqations may require use of an external island circuit detectqr. re~ay. .When reguired, the positive control of the relay coil is connected to terminal 13 of the Motion Monitor and the negative control of, the relay coil is connected to terminal 11 of the Motion Monitor. 6089, p. 2-3 3. Surge-Ripple Filter (12 voe, 2.5A, Part No. N451036-0702) A Surge-Ripple Filter is required when the power supplied has ripple greater than 0.5 volts peak-to-peak. 4. Track Coupling Unit Tuned Shunt The Track Shunt is used for stabilization of track circuit characteristics, and in some cases where motion detection zone is required to be less than that of the Motion Monitor's effective range. For application see Sec.tion III. Figure 3-1. Freq. 207 230 390 405 570 630 5. Hz Hz Hz Hz Hz Hz For typical connections see Part No. N451039-2401 N451039-2402 N451039-2403 N451039-2404 N451039-2405 N451039-2406 Lightning Arresters Lightning arresters are used to protect the Motion Monitor by limiting the surge voltages entering by way of either the track or battery line. For circuit placement see Section IV. Part No. Description N314265 N327988 N314266 Rated breakdown, Rated breakdown, Same as N314265, block Same as N327988, block N327989 6089, p. 2-4 _j 50-300V 500-1200V with terminal with terminal WABCC ~ 2.3 CIRCUIT DESCRIPTION 2.3.1 (REFERENCE - FIGURE 2-1) Basic Components The Motion Monitor MM-21 comprises a motion transmitter and receiver and an island transmitter. Both transmitters as well as the receiver share common rail connections, while the island reciever is connected separately. 2.3.2 Transmitters The motion oscillator is coupled to the power amplifier with a large negative feedback to produce a constant current track source. One output lead is coupled to the rail by way of the track filter (a series resonant circuit) and the other output lead is coupled to the low frequency modulator which connects to the opposite rail. The output of the modulated carrier circuit is coupled to a unity gain amplifier having low output impedance. The output of the amplifier is then coupled to the track by means of a high pass filter. 2.3.3 Motion Receiver and Differentiator The motion receiver is a sharply tuned detector that monitors the voltage across the rail impedance and compares this with a bucking voltage developed at the output of the transmitter's tuned filter. The output of the receiver is coupled to the differentiator which responds to any change in the inter-rail voltage caused by train movement. If no train is present, or one is stopped within the motion monitor's approach, the output from the differentiator is sufficient to place the no motion - receding train oscillator in oscillation. Similarly, a receding train will cause a greater output from the differentiator and the no motion receding train oscillator will be placed into oscillation. However, a fast approaching train will cause the differentiator's output to reverse polarity and stop the no motion - receding train oscillator. 2.3.4 Island Receiver The island receiver detects the presence of railroad cars in the near proximity or on the island circuit. The island receiver also includes in its output a rectifier and filter. The island receiver's rectified output is coupled to the vital gate circuitL · 6089, p. 2-5 ~, O'I 0 CX) \.0 t"(l B E \I N D A I O'I A x y . - - - - - - -- I 5 ___..;~~~::::::::-..J TRA~M~R1--;E~V~--- - - - - - - - , I 7 ------ ISLAND RECEIVER I SERIES RESONANT TRACK FILTER • LOW FREQ. t-.(1ULTl VIBRATOR AND MODULATOR • POWER ISLAND A p I FER M L TIMER I DIFF~:1~-E~TIA TOR I NO MOTION AND RECEDING-TRAIN OSCILLATOR I TO ALL P. c. BOARDS OSOLLA Tffi AND PRE - AMP. ~_:~~~-'.:'~~8-~ I II I . L __________ _J FIGURE 2-1. fi BATTERY MOTION MONITOR RELAY MOTION I I I & LJ I I ----- I I t AND MOD. OSOLL. RECTIFIER FILTER AND VITAL GATE RELAY DRIVER ---- FILTER CARRIER RECEIVER AMPLIFIER I HIGH PASS POWER IAMPLIFER 17 KEY TO SYMBOLS fi-TWISTED PAIR Motion Monitor Block Diagram 3 TURNS/FT. I ):-'..:..! -r~1' -'---L ISLAND RELAY (OPTIONAL) WABCD ~ 2.3.5 Vital Gate Logic and Relay Driver. Outputs from both the island receiver's rectifier and filter and from the no motion - receding train oscillator are applied to a vital gate circuit which includes modulation check circuitry. The outputs of these gates are applied to the Motion Monitor relay driver. The relay driver is a power amplifier that boosts the input to a sufficient level to drive the Motion Monitor relay. If no train is present, or one is stopped in the approach track circuit, both outputs are present to the vital gate circuits (one from oscillator and one output from the island receiver). Consequently, with both inputs present, the vital gate circuits will be "gated-on" and signal voltage will be supplied to the relay driver,causing the Motion Monitor relay voltage to be present. When a train is approaching at a given speed and distance from the crossing so as to cause the inter-rail voltage to fall at a sufficient rate and produce a negative output from the differentiator, there will be no output from the no-motion receding train oscillator. The island receiver will apply an output voltage to the gates; however, since both outputs are not present at the vital gate circuits, the gates will be "gated-off", removing power to the relay driver. With no input voltage to the relay driver, the Motion Monitor relay will deenergize, causing the highway crossing warning devices to be activated. When the Motion Monitor relay is deenergized, the timing circuit is enabled through the back contact of the relay. The Motion Monitor relay will not be energized again until the elapsed time equals the time set by the potentiometer of the internal timing circuit, and then only if the train has stopped approaching the crossing or is receding from it. When a train has occupied the island circuit, there will be no output from either the no motion - receding train oscillator or the island receiver. With no input voltages to the vital gate circuits,there will be no input to the relay driver. The relay driver having no input causes the Motion Monitor relay to remain de-energized. When a train has proceeded through the crossing to the point where the last car's rear wheels have sufficiently cleared the island circuit, both the no motion - receding train oscillator and the island receiver outputs will be present at the input to the vital gate circuits causing the gate to turn on. An output gate voltage will be supplied to the relay driver causing the Motion Monitor relay voltage to be present,and if the internal timer has run its time, energize the relay, thereby deactivating the highway crossing warning devices. 6089 T P• 2-7 WABCD ~ 2.4 2.4.1 THEORY OF OPERATION Signal Board (Refer to Figure 2-2 and 7-2) Since any modulation of the transmitter due to power supply changes would have a drastic effect on the receiver, which is sensitive to very small changes in amplitude,the circuitry has been designed to be immune, as nearly as possible, from power supply changes. For example, the ocillator, Ql, is designed to have zener diode regulation of its power supply, with the diode's impedance in series with the oscillator tuned circuit, so if the diode were to open, the Q of the tuned circuit would be reduced so that the oscillator will not oscillate. This assures that the transmitter will not operate with the oscillator in an unregulated condition. Resistor R2 and R3 provide further compensation by feeding a portion of the power supply change to the oscillator base bias circuitry in such a manner that the oscillator output actually falls slightly for a supply voltage increase. This compensates for tendencies in the opposite direction due to zener diode impedance and imperfections in the subsequent stage's gain stability. The output of the oscillator is coupled by transformer Tl to the pre-amplifier made up of transistors Q2, Q3, Q4 and QS. Since this amplifier's most sensitive point is to power supply ripple in its input bias network, it is safely filtered with a four terminal capacitor, C4. The pre-amplifier is capacitively and transformer coupled by C7 and T2 to the power amplifier made up of Q6, Q7, Q8 and Q9. Since it was found that this power amplifier could be modulated by changes in its input bias, its base bias voltage is also supplied from the oscillator zener voltage. The power amplifier uses emitter degeneration to make it independent of power supply changes and also to make it act as a constant current source. The power amplifier is transformer coupled, by T3, to the rails through a series resonant filter, T4 and C9. Part of the voltage across the inductor of this tuned circuit is used for bucking purpose, since it will be constant regardless of train position. Transformer T3 provides the phase correcting part of the bucking voltage. The modulator circuit consisting of QlO, Qll and Ql2 functions as a conventional multivibrator, oscillating at approximately five (5) cycles per second, the desired modulation frequency. Qll drives QlO, which acts as a switch to alternately short and unshort the high voltage secondary of the modulation transformer T6. Current flowing from the series resonant filter through the primary of the modulation transformer, on its way to the rails, induces a small voltage in the other secondary which is in series with rail input to the motion detector receiver. Conduction of QlO removes this small voltage. Diode D9 protects this circuit from surges. 6089, p. 2-8 WABCC ~ 7 5 ~ MODULATOR OSCILLATOR f----? PRE-AMP ---7' POWER AMPLIFIER Figure 2-2. FROM SIGNAL PCB (MOTION RECEIVER) VOLTAGE - - - . i RECTIFIER FILTER ECTIFIER/ FILTER ANO/OR GATE Figure 2-3. SERIES RESONANT FILTER - ..., MOTION RECEIVER ~ TO DETECTOR PCB (VOLTAGE DOUBLER) AMPLIFIEF Signal Board Block Diagram DIFFERENTIATOR DOUBLER FROM ISLAND PCB f----? - NO MOTION OSCILLA'IDR GATE RELAY VOLTAGE DOUBLER/ MOD. DET. TIMER AMPLIFIER MOTION RLEAY Detector Board Block Diagram 6089, p. 2-9 WABCD ~ 15 17 5 7 HIGH PASS FILTER TUNED XFMR AMPLIFIER HIGH Q BANDPASS FILTER & GAIN CONTROL AMPLIFIER DEMODULATOR TO DETECTOR & NEGATIVE DC MAKER BOARD CHOPPER MODULATOR CARRIER SCILLATO Figure 2-4. ODULATIO SCILLATO Island Board Block Diagram The algebraic sum of the track voltage, the bucking voltage, and the modulating voltage is fed to a tuned transformer, T7, which serves as the input of the motion receiver. Surge protecting diodes, DlO and Dll, are connected to the secondary of this transformer. The transformer drives the motion receiver amplifier made up of Ql3, Ql4, Ql5 and Ql6. This amplifier drives a transformer, TB, which steps up the voltage to be fed to the voltage doubler on the Detector PCB. 2.4.2 Detector Board {Refer to Figure 2-3 and 7-2) The output of the island receiver on the Island Board is rectified and filtered by DS, D6 and C9. It will then be used as a gating voltage which will be present except when a train is occupying the island section of the track. The output of the motion receiver in the Signal PCB is fed to the voltage doubler, where voltages of up to 300 VDC are available to drive the differentiating capacitor. While the five cycles per second modulatinq frequency must be passed throuqh the differentiating capacitor, any carrier frequency ripple getting this far could result in an unsafe condition, so ripple filtering is provided by a twq section RC filter using two, four terminal capacitors, C2 and C3. The differentiating capacitor, C4, must be of a very high quality, since it will have to withstand several hundred volts across it and still exhibit a low leakage compared to the 1~1;2 microamp signal which results from the slowest moving train which can be detected. The output of the capacitor is coupled directly to the no motion or receding train oscillator, Ql. This oscillator 6089, p. 2-10 WABCD ~ operates at approximately l-l/2 microamps of power supply current, and an approaching train serves to buck or overcome this current, thereby turning the oscillator off. This supply current must be of a known value and vitally so, therefore power for this oscillator is-derived from the zener diode in the transmitter oscillator on the Signal PCB. If no trains are moving toward the crossing, this oscillator will be oscillating and modulated at 50% or more by the five cycles per second recovered moduiation being passed through the differentiator. The output of the no motion oscillator is transformer coupled by Tl to the gating transistor, Q3. This transistor has its power supplied by the island receiver through the rectifier/ filter. If the island is occupied, this DC output_goes away and Q3 provides such a heavy loading on the oscillator, that it stops completely. The output of the gate goes to three places, {1) the voltage doubler/modulation detector, (2) the modulation amplifier, and (3) the and/or gate. The output of the gate is first capacitive coupled to a voltage doubler which once again demodulates the five cycles from the oscillator output, filters out the oscillator frequency, and couples the modulation to the modulation amplifier. This amplifier is made up of transistors Q4, QS, Q6 and Q7. The output of the amplifier is rectified and filtered by Dl2, Dl3 and Cl9, then fed to the and/or gate, Q8. This gating voltage is a check of the oscillator, Ql. Thus, Q8 will have an output if there is DC provided ;for its collector from the rectifier filter {this DC resulting from either the recovered modulation, or from a large oscillator output due to a rapidly receding train) and if a high frequency is coupled to the base of Q8 from either the no motion oscillator by way of the gate, or from the limit detector on the Signal board. Thus,transistor Q8 can be considered to be an OR gate at its base input, and an AND gate with respect to the combination of its base and collector inputs. The output of .the and/or gate is coupled to a four transistor relay amplifier made up of Q9, QlO, Qll and Ql2. This amplifier is used·to provide enough power to drive the motion relay. An output transformer, T2, is used to insure that sufficient relay voltage is available at the lowest power supply voltage to be used. As the motion monitor relay is deenergized, both the Colpitts oscillator cirpuit, Ql4, and the programmable unijunction oscillator circuit, Ql3, are connected to the negative battery by the back contact of the motion monitor relay. The programmable unijunction transistor oscillator will time out according to the charging rate of capacitor C24, as determined by the value of R35 and the setting of R2-A and will be allowed to trigger the gate if, and only if, the detection circuit indicates that the motion voltage has come back up enough to hold up the motion relay. The inhibit of the trigger is accomplished by clamping the gate of the PUC to B+ by way of the back contact of relay RYl. As C24 is being charged, capacitor C29 is being charged through resistor Rt4 and R2-B and will have sufficient charge at 3/4 through the delay time setting to pick up the motion 6089, p. 2-11 WABCD ~ monitor relay when the gate is triggered. The operating margin compensates for small supply voltage fluctuations, tolerances in C29, and the relay coil pick-up power due to temperature changes. After pick-up, the timing circuits are inoperative and the motion relay is held up by the motion voltage at the output of T2, through its own front contact and diode D21. 2.4.3 Island Board (Refer to Figure 2-1 and 7-2) To overcome large ring-by distances associated with low frequency island circuits, a high frequency carrier circuit is utilized in the MM-21 Motion Monitor. The output of the carrier oscillator, Q9, is chopper modulated by QlO at a value as is determined by oscillator circuit, Q8. Capacitor, Cl~ and inductor, L3, filter the resulting modulated signal and remove the low frequency component and high frequency harmonics. Potentiometer, Rl, mounted on the front panel, provides sensitivity adjustment. Integrated circuit, IC-2, along with transisters, Ql2 and Ql3, make up a unity gain amplifier having low output impedance. Transformer, T4, and capacitors, C21 and C22,comprise a high pass filter to couple the output to the track. Diode, D7, along with diodes,Dll, Dl2 and Dl3, provide surge protection. The receiver portion of the Island Board is shown on the left side of the circuit diagram in Figure 7-2. Capacitors,cl, C2, C3, transformer, Tl, and inductor, Ll, comprise a high-Q bandpass filter. The output of the filter is demodulated by detector diode, Dl, and applied to emitter followers, Ql and Q2. Integrated circuit, IC-1, is a temperature compensated circuit which amplifies the signal to a working level. Capacitors, C9 and ClO, and diodes, D3 and D4, produce a negative DC voltage from the amplified signal to operate an oscillator which acts as a level deflector. The 22Khz output signal of the oscillator is amplified by transistors, Q4, QS, Q6 and Q7, which is then applied to the detector board where it is rectified and filtered to enpower gating transistor, Q3. 6089, p. 2-12 WABCCJ ~ SECTION III APPLICATION OF THE MOTION MONITOR MM-21 3.0 GENERAL RULES FOR APPLYING ANY MOTION DETECTION DEVICE The following considerations should be kept in mind when considerating the application of a motion detection device. Double bonding within the approach limits of highway crossings is suggested as extra protection against improper operation due to high resistance single bonding. The "Track Coupling Unit Tuned Shunts" should be used if there are any insulated joints within the effective limits of the motion.monitoring track circuit. However, there is no protection given in the event that one of these units becomes disconnected. For this shortcoming, similar to that of the previously mentioned bonding, the only solution is to incorporate llcontinuous rail" at least over each approach of every highway crossing that employs a motion detection device for warning. Two sets of insulated joints should be located between motion detection devices operating at the same frequency on the same track. For any motion detection devices, certain conditions of broken rail can negate train detection while train movements are in progress. Therefore, inspection procedures should be exercised to insure the integrity of the rail circuit, including bond wires, joints, etc. Under no case should any cars be left standing on a highway crossing approach equipped with a motion detection device while switching is being performed unless operating rules require a flagman during such an operation. 3.1 OPERATIONAL CONSIDERATIONS Optimum results from the Motion Monitor can only be obtained through an understanding of the factors involved and how these factors can be manipulated to the users best advantage. Among the subjects covered by this chapter are: How to control the effect of swings in track ballast. How to limit the warning zone. How to establish the length of the island zone. Determining the best operating frequency. 6089, p. 3-1 WABCD ~ 3.1.1 Track Ballast Changes in track ballast resistance will have an effect on Motion Monitor operation. Track circuit stabilization is suggested as a means of dealing with the ballast resistance problem. Some of the effects of ballast resistance changes are: 1. Decrease in effective approach distance. 2. Narrowing of speed range applicable for a given warning time. 3. Decrease in minimum warning time. 4. Lengthening of effective island zone. The Motion Monitor is designed to perform satisfactorily with track ballast qf 3 ohms/1,000 ft. to "infinite" ballast resistance. However, when the approach distance is short, it will operate under some conditions with track ballasts as low as 1 ohm/1,000 feet. 3.1.2 Stabilization of Track Characteristics Through Shunts Rail to rail shunts are imperative in continuous rail areas and must be applied at the extremes of the warning zone. The shunts enhance performance particularly under various environmental conditions and minimize variations in the following: 1. 2. 3. 4. 3.1.3 Effective warning distance. Speed range applicable for a given warning time. Maximum warning time. Length of effective island zone. Types of Shunts These shunts may be one of two types depending upon wheather or not other signals co-exist on the rails as follows: 6089 I P• 3-2 1. Hardware or "zero" Ohm impedance shunts may be used where such devices will not disrupt operation of other rail carried signals. 2. Tuned, series resonant shunts are used in applications where D.C. signals and/or A.C. signals of other frequencies are using the rails concurrent with the Motion Monitor. WABCCI ~ TRANSMITTER CONNECTIONS J L TUNED SHUNT 7 5 17 15 B FILTER N 14 MOTION MONITOR g ro 13 6 * IR* Figure 3-1. OPTIONAL MMR Typical MM-21 Installation It is imperative that rail-to-rail shunts as described previously must be placed at the desired distance from the crossing (see Figure 3-i). In placing these shunts, care must be exercised to place them within the limits defined in the Frequency Selection Charts, Figures 3-2, 3-3, and 3-4. Unsymmetrical arrangements of the warning zone tend to pe-sensitize the Motion Monitor; however, performance remains generally within acceptable limits for configurations having up to 1.3 : 1 unbalance. Rail-to-rail shunts should be located appropriately in consideration of all railroad operating conditions. Deviations from limiting conditions should be covered by appropriate railroad operating rules. 6089, p. 3-3 WABCO ~ 3.2 ISLAND ZONE DEFINITION The chief purpose of the "island circuit" is to protect the crossing during periods when it is occupied by either stopped or very slow speed rail traf.fic. 3.3.1 Configuration of Island Protection Track Connections The track feed leads are connected to the rails adjacent to the highway. A second pair of track leads for the island receiver are connected to the rails on the opposite side of the highway. The minimum distance between the two pairs of leads, in addition to spanning the highway, should not be less than the maximum inner wheel span of the railroad cars using the crossing. 3. 3 PARALLEL TRACK OPERATION Where two parallel tracks are to be equipped with Motion Monitors, different frequencies must be used on each adjacent track to avoid mutual interference. 3.4 MOTION MONITOR FREQUENCY SELECTION For various reasons it is not possible to establish rules that will show operation under actual field conditions. The following is supplied as a guideline for frequency selection. As stated previously in Section 3.1.1, it is necessary to determine the minimum track ballast resistance encountered at the particular highway crossing. To determine the applicable frequencies for a given installation, determine the maximum approach speed of rail traffic and the desired warning time. Select the applicable chart (Figure 3-2 for 3 ohms, Figure 3-3 for 5 ohms, and Figure 3-4 for 10 ohms) according to the minimum track ballast resistance to be encountered. Where the horizontal speed line intersects the diagonal warning time line, look .down to the horizontal scale to determine the minimum length of the approach zone. The permissible operating frequencies may be read by referring to the area in which the speed and time line intersect. From these charts it can be seen that the operating frequency, channel separation or number of channels within a given range, the maximum detectable range, minimum ballast, and the warning time are all interrelated. 6089, p. 3-4 WABCCI ~ The following formula may be used as a guide to detection range and warning time. As a general rule of thumb: L = 700 .... troooE \J-rWhere L = Detecting range (ft.) f Frequency (Hz) b = Ballast (Q /1000 ft.) = EXAMPLE: At 3 ohm ballast and 207 Hz L 2665 ft. = Warning Time can be defined by: T = L/V EXAMPLE: 3.5 Where T = Warning Time (Sec.) V = Velocity (ft./sec.) L = Initial Detection (Ft.) For an initial detection at 2,665 ft. and 60 MPH trains (88 feet/sec.),the warning time would be about 30 sec. TRACK STRAP ADJUSTMENT The Motion Monitor MM-21 features a track length sensitivity adjustment consisting of a strap, mounted across either terminals 1 and 3 (long track}, or terminals 2 and 4 (short track}. The selection of,the proper position of the strap is influenced by such operating conditions as the length of the approach zone, operating frequency of the MM-21 unit, and the minimum track ballast resistance encountered at the particular highway crossing. These conditions are accumulated in Figures 3-2, 3-3 and 3-4 .on which benchmark "a" depicts the dividing line up to which distance a termination shunt requires a shorting strap across terminals 2 and 4. A termination shunt placed across the track at a point in excess of the benchmark distance "a" requires a shorting strap across terminals 1 and 3. 3.6 Basic Conriections Figure 3-5 illustrates the external wiring and connections to the MM-21 for a simple installation. This Figure illustrates a basic system with.the power supply relay and track connections that are necessary. The MM-21 can be employed in a variety of ways, including interlocking with wrap around DC or audio. See Figures 3-6 and 3-7. '!'he Ml'."1-21 offers flexibility to meet the system needs a3 determined by the customer by following these basic s-uid,:3lines. 6089 I P• 3-5 O'I 0 00 . ti \.0 . "O MAX APPROACH SPEED {MPH) w I O'I 100 90 80 70 60 50 40 ~$''\,~~ 30 a: ~c· ,,,~ CZ> 20 --- . --. 207, 230 Hz Units ... 10 None ~- -- - 390, 405 Hz Units a . 4a Approach zone bench mark for long track or short track strap application. To the left of point A put shorting strap in short strap position. To the right of point A put shorting strap in long strap position. -- None 11 • 570, 630 Hz Un~s a 500 .J 1000 1500 2000 2500 3000 EFFECTIVE LENGTH OF APPROACH ZONE Figure 3-2. 3500 (FEET) Frequency Selection Chart For 3Q/1000' (} MAX. APPROACH SPEED (MPH) 100 I 90 '-, 80 .' 70 60 . f ·. ' 50 ., ~~'\-~~ 40 ,Approach zone bench mark for lqng track or short track strap application. To the left of point A put shorting strap in short strap position. To the right of point A put shorting strap in long strap position. a: ~~ ~c· ')~ CZ, 30 .. 2.0 10 4 00 .. . 'U w I -..J 500 390, 405 Hz Uni ts 4a ~ • a 570, 630 Hz Units • ¥a °' 0 \0 . 207, 230 Hz Units .. 1000 1500 2000 2500 3000 EFFECTIVE LENGTH OF APPROACH ZONE Figure 3-3. 3500 4000 (FEET) Frequency Selection Chart For 5Q/1000' I ~~ D O"\ 0 ~I CX) \.0 . "Cl w MAX APPROACH SPEED (MPH) I CX) 100 90 80 70 60 50 a: 40 30 .,,.. None a 390, 4 10 207, 230 Hz Units • ~ 20 Approach zone bench mark for long track or short track strap application. To the left of point A put shorting strap in short strap position. To the right of point A put shorting strap in long strap position. fa . I- • 570, 630 Hz Unit1- Non 500 A05 Hz Units._ ' a 1000 1500 2000 2500 3000 EFFECTIVE LENGTH OF APPROACH ZONE Figure 3-4. 3500 4000 (FEET) Frequency Selection Chart For lOfl/1000' 4500 5000 WABCC ~,:&/ J L ISLAND RECEIVER CONNECTIONS SHUNT TRANSMITTER CONNECTIONS SHUNT YT CD 0 IR 812 N12 0 812 + N12 XR-@ ITEM DESCRIPTION ®OUTPUT 812 1 MOTION MONITOR, MM-21 2 RELAY, MOTION MONITOR TYPE PN-150BH 3 RELAY, CROSSING TYPE DN-11 4 RECTIFIER, 13.5 voe, 4.4 AMP TYPE CCR-4 5 SURGE RIPPLE Fl LTER N12 # #10 @ BX 120 r-----, TO #9 120V AC 60HZ SOURCE --,,,---1-'-:'.,,.._--t-----+--, #9 l BX120A #14 I NXl20A I #14 L----..J 120V LINE BXl20A 6 CIRCUIT BREAKER, GAMP 7 USG LIGHTNING ARRESTER HIGH VOLTAGE 8 USG LIGHTNING ARRESTER LOW VOLTAGE #14 POWER ON LIGHT NXl20A #14 GROUND TERMINAL - - - - - TO GROUND BUSS 5 .---.-#,,_ Figure 3-5. 9 TEST CLIP 10 LIGHT, POWER ON 11 BATTERY, 6 CELLS LEAD 12 RELAY, ISLAND 13 MOUNTING BASE, IR 14 MOUNTING BASE, MMR External Wiring and Connections for a Simple MM-21 Installation 6089, p. 3-9/10 WABCC }j: ~ ·i' ·c }{ ···:; ·•{ -·· '.) /~ '.) ~l APPl !CATION ~ THIS TYPIC.Al. IS INTENDED TO SHO·N OJ.ILY THE CIRCUIT COJ.IFIGURATION ~CE~S.ARY TO OBTAIJ.t .. XR.OPERATto"'U,t..L 6089 FOP ""4-21 ,'"4("1 ~FRVIC[ ~.A"JU .... L !)CJ')b FOR ,'F0 I:I. FOR ,t..PPLIC ... TIO•··ff l"J T[RAITORY l'IIVOLVl""G COOfO R.,_IL CURR["JT~ QR OTHER ~PECIAL .,_PPLICAT10l\i'S, C"O'IISULT THf MIGHW ... Y CROSS1"4G SYSTEMS £1'\lGl"'IEERl'llG SECTION, U,S. & ':. Div. 111-'BCO. ~= IT IS ~CESSARY TO PLACE RAIL TO RAIL SHU"JTS .,_T TH[ REQUIRED .4-PPROA(H WARNl"IG Ol~T,'IIC[ FROM fHC ':ROSSll\ilG. THESE SHUNTS ARE TO BE Pt,'C£0 WIH•llll THE LIMITS 0£Fl"IEO IN THE fqEQUEN(Y SELECT ION CHART': 1"l ~ERVtCf ",A,Al'\IUAL 6J89. THE WARl'\ll~G ZO"IE SHOULD 8£ -.RRA"IGEO -'S SYMETRICALLY .,_~ PQ5~18Lf HOWEVER ACCEPT,.BLE PER~ORMANCE CAN GENERALLY BE OBTAt"IEO FOR C.O'iF1GuRAT10"1~ o-t;Vll\fG UP TC I.] l Ul\i!BALANCE. LISE lUliEO SERIES RESONANT SHUNTS FOR MM-ZI APPt..JCATIONS INVOLVING OTHER SIG",l,'LS (Ac OR o~) US1"4G THE RAILS - (1NCf,P~UL,.TfO FOR BURIAL BELO\lf FROST LfVEL}. J.&t-21 • = &.= &= &= TWISTED PAIR - THREE TUR"4S/FOOT ( IF [XTR.A WIRE LENGTH IS PROVIDED AG,'II\IST FUTURE RAISING OF TRACK STRUCTURE OR OTHER - 00 lllOT £..Q..!..h) J.FTER OETERMll\flNG THE REQUIRED APPRO.ACH LIMITS, REFEAlofHE APPROPRIATE FREQUE,.,CY SELECTION CH,'RT (FOR T"iE PREVAILl"IIG TRACK BALL-'ST VALUE) l"l SERVICE MANUAL 6089 FOR MM-21 ANO SERVICE MANU.,_L 5906 FOR Af'O ll, ANO CHOflSE THE MM-20/AFO I:I FREQUENCY l"IOIC.ATEO. NOTE TH.,_T TWO SETS OF JOl'iTS SHOULD BE USED TO SEPARATE MOTION MONITOR DEVICES OP[RATl"IG ON THE SAME FREQIJEf\lCY 01\f THE SAME TRACK, ALSO WHERE '.:'WO PARALLEL TRAC'KS ARE TO BE EQUIPPED WITH MOTIOf\l MONITORS, DIFFERENT FREQUENC 1£5 MUST BE USED Of\l EACH ADJACE",!T TRACK TO AVOID MUTUAL l"ITCRFCAE'iCE. ALSO BE GOV[RliED BY RULES REGAROING AFC [ I FREQUENCY ALLOCATION. USG SHUNT ARRESTOR WITH TERMI ... AL BLOCK N314266J WITHOUT TERMl"IAL BLOCK N314265. USG SERIES ARRESTOR WITH TERMINAL BLOCK "13279!9J WITHOUT TERMl"IAL '" 390 40$ $10 630 ~ & ~= TRACK STRAP ADJUSTMENT REFER TO THIS SUBJECT AS COVERED BY MM-20 I SERVICE MA"IU ... l eoa,. P ... -1508H REL ... Y IFS,tF,18 STD., 400(1), NJ22511-007J BASE N34990,4. ti8= PN-1508 RELAY /\ :-1 £== & 1 A_ C::,..= ,,;j! , £.• 400(0, N322511-006' BASE N34H04. i"1TER"1AL TIMI ...G CIRCUIT. ADJUSTABLE FROM 1-16 SECONOS. ~L::;A;o:L~;;;:,;~o~:C ,;:::E;~R~~~D ~~~E~t'!; - I 6 ~ ...,-----£""T I ROADWAY-----------M"S,-80U""0 r ~ 6 8 USE #6 AWG FOR GROUNO WIRE. GRO\JNO WIRES SHOULD BE KEPT AS SHORT AS POSSIBLE •1THOVT SHARP 8£"'405. GROUND CON'iECTIONS SHOULD 8£ fiAAOE TO THE &= ~~~L~: !:o~~~ =~=Q~;!~~:s 1 w-21 T::~ ::~~~~=l.=R~~~s ~~ 2 ~A:;;Q~:;::Es. •eLE AFO n FR£QuE!i£Y 1120 lllO 2720 no------------------1010 :uio ' ' FRE9u£~Y (Hz) c()MPAT 207------------------115 930 (Hz) l 10------------------115 ,iso, l O so, I llO, 1420, i' I 40, 2540 405------------------815 ,930, IO SO, I 120, 13 JO I 420 1160, 2140 I £ 1 no------------------us no , 10 50 • 1 J 10 , 100 • , a10 • 2 1•o • 2540 ~ ,'PPRO,._CH l llollT £ [] uo------------------11.s ~uo, 10 50, 1120, 1 uo, 1 420, 21•0, 2720,3310,3410 1 Nl22500-90 I J BASE, "1314266, PN-1508H RELAY IFB,IF,18 STD., &= ~~R .J . &f'B STD., 400W - !frARNING ZO'*: I FASTBOU~O APPROACH L !MIT BONOEO (DOUBLE BOf\lOJNG IS RECOliMENOEO) OR WELDED RAIL. &=:~::~:!;'::;.STANCE IS ...or ;o [XCEEO o.15W ~OP TR ... '14SM .... ~o ').5W f,')P RECV. MM-i'I TP,."ISM. LE,.DS (trRMS 5 '- 1) SHALL AlW.l'V~ Bf THE '14E ... R £!.!lb.~ TO I Sl.ANO ZOflfE FROM C.,_SE. -- ~= T;!.!~D SH!i,!NT PART NO • "1451039-240 I N45H>U-2402 "'451")]9-240] NU 1019-2404 l\il4Slll9-240S flf4'510]9-2406 FR[QUE"'4c;_v......i.tlLJ. 207 I: MOT I 0"'4 MO"I I T_RR t.9,t-21~ • RELAY TO BE S[U:CTED WITH REGARD TO SYSTEM VOLTAGE .. :~ DELAYS PICK•UP COVERED BY hM-21 I I I I ~-;-1Ei- SERVICE MANUAL 6089.. DISTANCE BETWEEN TWO PAIRS OF LEADS SHALL "10T BE LESS THAN MAXIMUM IIINER WHEEL SPAN Of' RAILROAD CARS USING Th£ CROSSl"IG. o.c. l"'IPUT SHALL BE SIZED TO INSURE a., TO 11.2v DC ACROSS ....-21 TEAMl"1.ALS 11 I 9 TAKl"fG INTO ACCOU'4T O .3tW RESISTANCE OF SURG£ RIPPLE FILT£R&_{WH£N REQ 1 0) AIIIO A NOMINAL MM-21 CURREIIIT DRAIIII OF, •• ,,,.. • tSlANO Rf LAY (OPTIONAL) TR SURGE RIPPLE FILTER IS R£QUIREO WHEN DC lt,IPUT SOURCE RIPPLE EXCEEDS o.5V PEAK TO PEAK. USE SURGE RIPPLE FILTER '4451036-0701 FOR Af'O RECEIV£RS ANO LOW POWER AFO TRANSMITTERS. USE SURGE RIPPLE ,-ILTER N451031-070! FOR HIGH POWER AFO TRANSMITTERS A,..,O MM-21 UNITS. 61 r 3 2 4 14 12 ~-.J LONG SHORT \ TRAci:, TRACfS TRACK STRAP ADJUSTMENT & N . 1~ ~~~ W~APAR(UjO VI A AFO TRACK CI RCU I TS ' APPl1£S FOR S•GNALED/NON-SIQNALED TERRITORY. WITHOUT INSUL"TEO JOINTS t.OCATED IN WARNING ZONE. roR APPLICATIONS INVOLVl""G INSULATED JOINTS WITH1N THE WAR"IIP«i ZONE REFER TO FIG. 6-10 - WITHOUT SWITCH(s) l.OCAT£0 ,~ WAR.,.ING z ~ . • - WITH WRAPAROUND (AFO ..AREA WAR,.,lr«i). - Figure 3-6. External Wiring with Single AFO Wraparound. 6089, p. 3-11/12 ......-: ')' i' • ·;~} WABCC j ~ ·-;1 :;"( <~ .,._ ·-~ \i .j :4 ;~ APPL IC-' Tl 00 ~ THIS TYPICAL IS INTENDED TO SHa.tf 0"4LY Tt£ CIRCUIT C0"4FIGURATION "ECESSARY TO OSTAIP!i .. XR•oPER.-,TICVil WHEN MOTIO'ii ~ITOR EQUIPMENT IS EMPLOY£0. AOOITIOP!IAL CfRCU'l"' TO Bf ADOfO A~ R[QUIAEO TO CO"JTROL ~PfCIFJC WAR"il,_.G DEVICES U~EO- FOR AOOITIO"'{AL .a.PPLICATIO"'{ DETAILS .a."110 l"IFORMATIO",I RELATIVE TO M.a.t"IIT£"1A"ICF 1"4STRUCTIO"IIS REFER TO SERVICE MA'IIUAL 6'>89 >OR "-Wl-21 .a."IO SERVICE MA"IIUAL 5906 FOR AFo'n. FQf:i APPLICATIO"IS l"II TERRITORY l"IIVOLVl"IIG (00f0 RAIL (URRE"IIT~ OP OTHER SPECIAL APPLICATIO"IIS, COI\ISULT THE HIGHWAY rRO!'~l"IIG ~Y~TEM~ E"lGl"IEfRf'iG ~ECTION, u.s. & s. 01v .• WABCO. £= IT IS "'fCESSARY TO PLACE RAIL TO R>.IL SHU-.iTS AT THE REQUIRED .-,ppRQACH WARNl"ffi OIST.',..CE FROM THE CROSSl",!G. THE.SE SHUNTS ARE TO BE PL.-,C£0 WITHl'f THE LIMITS DEFINED IN THE FqEQUENCY SELECTION CHARTS lN SERVICE Ml'-"«JAL 60&9. THE WAR"lllliG ZONE SHOULD BE ARRA"tGEO AS SYMETRICALLY AS POSSIBLE, HOWEVER, .-.ccEPT ...BLE PERFORMA>.tCE CAN GENERALLY BE OBTAl>;'EO FOR CONFIGURAT.l~S HAVI ... G UP TC 1.1. I UNBALANCE. USE ~ SERIES RESONANT SHUNTS FOR Jr.Wl-21 APPLICATIONS INVOLVING OTHER SIGN1'LS (Ac OR oc) USl"tG THE RAILS - {1NC.a.PSULATEO FOR 8URI ... L BELOW FROST lWAR~ING ZO> SERVICE MANUAL 5906 FOR AFO II, ANO CHOnS£ THIE ----20/AFO l l FREQUE"4CY 1#\IDICATEO. NOTE TH.-,T TWO SETS OF JOl"iTS SHOULD BE USED TO SEPAR.-,TE MOT ION MONITOR DEVICES OPER,'TING ON THE SAME FREQUENCY ON THE SAME TR.-,CK. ALSO WHERE TWO PARALLEL TAAf·Ks ARE TO BE EQUIPPED WITH MOTI0"4 MONITORS, DIFFERE""1T FREQUEfrfC IES MUST BE USED 0-. E... CH ADJACE114T TR...CK TO .-.vo10 MUTUAL 1,..TP:R,!RE""1CE. ALSO BE GOVERNED BY RULES REGARD I NG AFO O FREQUE""1CY ALLOCATION• USG SHU""1T ARRESTOR WITH TERMINAL BLOCK Nl142U 1 WITHOUT TERMlll4AL BLOCK Nl 14lfi5. USG SERIES .-.RRESTOR WITH TERMINAL BLOCK Nl27H9J WITHOUT TERMl~AL BLOCK P\IU 1911 • TR.-,CK LEAD RESISTANCE FOR RECV. &= ~::~~ /\. Lll• ~ ~ =v~A~O A~~~~~~~r:E ~;~~ SERVICE -~AL eoa,. P""1-ISOBH flELAY IFB,IF,11 STD·, P'f-1508 RELAY 6FB STD., P""1-ISOBH RELAY IFB,IF A. /!\. 20 7 ... 2)0 uo '70 630 ~ &== BONDED (DOUBLE BONDING 1 & 7) SHALL .-,LWAYS Bf TH£ £= ~~~L~: 1 ~:o~~~ W::21 :~;Q~;~~:s T::; ~:~~~~=L:R:~s II ~~ 2 ~A;!;Q~;:::Es. rr C()MPAT IBLE AFQ FREQUENCY GHz) FA£QU£NCY (HZ) i'O 1------------------aa 5, 930, I 120 • J l lO, 27 20 210------------------10 50 13 60 J 10------------------,as 10 50, 1 llo, 1420, 21 40, 2540 405------------------815 ,UO 1 1050, I 120, I J)O, 1420, I 860 1 ,ho, ~ · ~~S~H1s SUBJECT AS COVERED BY MM-20 .-,FO-B .-.FO-N !!_ 2140 510------------------115 ,110, 10 so, 1 uo, I 4ZO, 1 aao ,2140, 2540 40om, N3225tl-007J BASE Nl49904. uo------------------115 .uo, 10 50, 1120, 11,0, too ,2140, 2720,JJI0,1410 4000>, Nl2251t-0061 BASE Nl4H04. ~ I 14 12 l,l1'~ t.M-21 ~ I & 17 MOTION MONITR_R R~L"Y TO BE SELECTEO WITH AEGARO TO SYSTEM VOLTAGE. INTERNAL TIMf"fG CIRCUIT. AOJUSTABLE FROM 6-]6 SECONDS. DELAYS PICK-UP OF IINII RELAY RE LAT IVE TO THE PREDETERMINED SET TIME. ~ - FOft ISL.-.NO ZONE DEF1""11TION, ft!:FER TO THIS SUBJECT AS COVERED BY *-21 S£AV11:E MA,tflJAL 6089. OISTANCE 8ETWEE""1 TWO P.-,IRS OF LEADS SHALL NOT BE J.l. LESS THAN MAXIMUM l ~ A WHEEL SPAN OF AAILR01'D CARS USING THE CROSS I ~ . t.::),.• p.c. lttPUT SHALL 8£ SIZED TO INSURE l · I TO 16.2V DC ACROSS MM-21 TEftMl~LS II & t TAKIW INTO ACCOUNT o.1alDR£SISTANCE Of' SUR&[ RIPPLE FILTER (WH[N M;Q'O) A NOMINAL MM-21 CURR£tff DRAIN OF 1.1 , . . . ~ 0 IS RECOIIIIIENOEO) OR lil!ELDED RAIL. 40o'», 1022500-901 J BASE ~l:142&6. 1B STD·, & NO· USE th AWG FOR GROUND WIRE. GROUND 1111R[S SHOULD BE KEPT AS SHOAT AS POSSIBLE WITHOUT SHARP BElliOS. GROUND CON"ECTIONS SHOULD BE W.DE TO THE . IS NOT TO EXCEED 0.15<0 FOP TRAii.iSM • .-,NO 0.5<0 MM-21 TRA"'{SM. LEAOf {TERMS 5 TU'fEP SHUNT PART N4$10l9-2401 N4510l9-2402 N4510l9-2403 N4510Jt-2404 N4SIOl9-2405 N451039-2406 FREQU[-.iCLl.!:!U. I 3 I I • Aa L J ~.!:ti£ . MMR SURGE RIPPLE FILTER IS REQUIRED WHEN DC 1"4PUT SOURCE RIPPLE EXCf:EDS PEAK TO PEAK. USE SURGE RIPPLE FILTER N4510J6-0701 FOR Af'O RECEIV!:RS AND LOW ffOIER AFO TRANSMITTERS. USE SURGE RIPPLE f'ILTER Jt4SIOJl-070! FOR HIGH ftOWER Af'O TRANSMITTERS A~ t.M-21 UNITS. o.sv ~ _ N 4 ,..._.J TRACK STRAP AO.JUSTMENT ISLAND , RELAY (OPTIONAL) "Pffl 2 LONG SHORT \ TRAC~ TRACtS & ATR I~------~ ~--. 1 t,~T. U'~ .. ~ ~ TO HWY XING £0NTROL (XR RELAY) ~ WllAPAROl.tlO VI A AFO TRACK CI RCU I TS - M'PLIES FOR SIG"lALED/f'.40N-S!GNAL£0 TERRITORY. WITHOUT INSULATED .JOllliTS LOCATED IN WARNI~ ZONE. FOR APPLICATIONS 16'VOlV1""1G INSULATED .JOl"'TS WITHIN THE WAR'IIING ZOP\IE REFER TO FIG. 6-10 WITHOUT SWITCH(s) LOCATED IN WARNING ZONE. , WITH WRAPAROUND (AFO-OVERL.-,PPEO FOR ISLAND). PERMITS FOLLOWING TRAIN MOVEMENTS. -~ :J ~ '3: ~ ·.1 Figure 3-7. External Wiring with Dual AFO Wraparound. 6089, p. 3-13/14 WABCCI ~·"V' SECTION IV MOUNTING AND ADJUSTMENTS 4.1 MOUNTING The Motion Monitor case is designed to be either shelf, wall or rack mounted (see Figures 7-1 and 7-2). Mounting brackets may be turned 90° to accomodate shelf mounting. By reversing the mounting brackets, the Motion Monitor can be mounted in a rack with plug-in relays without exceeding the clearance line of above relays. 4.2 CONNECTIONS (REFERENCE FIGURE 3-1) 1. Rail'Connections The transmitter and receiver connections must be made with twisted pairs (thre.e twists per foot). The two twisted pairs must be separated as much as possible. The loop lead resistance is to be held to 0.15 Ohms or less for transmitter track leads (terminal 5 and terminal 7) and to 0.5 Ohms or less for receiver track leads (terminal 15 and terminal 17). 2. Battery Connections The power supplied must be a minimum of 8.8 VDC and a maximum of 16.2 VDC at the Motion Monitor's terminals (terminal 11 positive and terminal 9 negative). Maximum ripple voltage should not exceed 0.5 volts peak-to-peak. A surge-ripple filter must be used when the ripple is greater than 0.5 volts . .3. Lightning Arresters Lightning protection for the Motion Monitor is to be provided as shown in Figure 3-L Ground wires should be as short as possible and without sharp bends. A lightning shunt arrestor should be connected across the D.C. power source· (USG shunt, low voltage N314266). For protection of the Motion Monitor from surges entering from the track,both series to ground (USG series, high voltage with terminal block N327989) and shunt (USG shunt, low voltage N314265) protection should be installed as shown in Figure 3-1. 4. Ground Connections Ground wires should be kept as short as possible without sharp bends. Ground connections should be made to the common low voltage ground bus system that includes grounds at cases or 6089, p. 4-1 WABCO ~·~ houses. Make ground connections with #6 wire. Messenger wire or metallic sheath of cable, if used, may serve as ground tiein between cases or houses. 5. Relay Connections Relays should be connected in accordance with Figure 3-1. If, however, the relay has front testing, remove the wire from +A and connect i t to the +T terminal of the relay. This applies to both the Motion Monitor relay and the Island relay. 4.3 ADJUSTMENT PROCEDURE (Reference Figure 4-1) The Motion Monitor has two potentiometer adjustments. (a) "TIME 11 potentiometer, adjustable from 6-36 seconds and factory adjusted to 20 seconds. (b) "ISLAND" potentiometer. In most applications, the factory set 20 second delay time will be satisfactory and the only Motion Monitor adjustment will be the setting of the "ISLAND" potentiometer, which is described below. STEP I. © CQNNECT a O. 06 Q test.@ shunt across the track on the island receiver's side of the crossing at the location where it is desired to define the limit of the island zone. This usually will be at the point where the island receiver's leads connect to the track; but might be farther from the crossing if it is desired to extend the island zone beyond its physical limits. In no case should the test shunt be placed within the island zone; that is, between the points where the island receiver's connections and the transmitter's track feed connections (opposite sides of the highway) are made. At high frequencies the inductive component of the standard shunt becomes rather large compared to 0.06 Ohms. Instead use 5 foot pieces of Belden # 8670 (480 x 30 strands, .75~ wide) braided cable, bundled together with electrician's tape and connected to a rail clamp on either end according to the following frequency schedule: MM Frequency (Hz) 207,230 390,405 570,630 6089, p. 4-2 Island Frequency (Hz) 12280 15000 20000 Part# 451554-0101,0102 451554-0103,0104 '451554-0105 I 0105 # of 5' Pieces 4 5 6 """....""' WABCO . TRANSMI TtER CONNECTIONS L TUNED SHUNT 5 B 7 17 ISLAND RECEIVER CONNECTIONS 15 II FILTER N g I~ MOTION MONITOR ro 6 * .·Figure 4-1. STEP 2. OPTIONAL Typical MM-2i Installation IF. THE MOTION MONITOR RELAY IS DE-ENERGIZED TURN the potentiometer clockwise all the way ~wait approximately 20 seconds until Motion Monitor.Relay is energized. Perform Step 3. STEP 3. IF THE MOTION MONITOR RELAY IS ENERGIZED a. TURN the potentiometer slowly counterclockwise just to the point where the relay de7energizes. b. REMOVE the test shunt c. CHECK that the relay is now energized. If the relay fails to energize, Step 3 a. was improperly performed. Repeat Steps 1 through 3 c. inclusive. 6089, p. 4-3 WABCC ~~ d. CONNE.CT the O. 06 S1 test shunt across the track at the point where the track feed leads are connected to the rails. e. CHECK that the relay is de-energized If the relay fails to de-energize, check all four track lead connections to see that they agree with Figure 4-1. Make necessary corrections and repeat Steps 1 through 3e. THIS CONCLUDES THE ADJUSTMENT PROCEDURE STEP 4. REMOVE the test shunt from the track. STEP 5. Tighten lock nut of "ISLAND" potentiometer. If 20 second delay time is not applicable to the particular site situation, the "TIME" potentiometer can be adjusted as follows: 1. Loosen lock nut of "TIME" potentiometer. 2. For less time, turn potentiometer counter-clockwise, and for more time, clockwise. 3. To measure the delay time after adjusting potentiometer, proceed as follows: a. Momentarily short terminal 15 to 17 on the Motion Monitor Unit. The MM relay will de-energize. b. With a watch, measure the elapsed time that the MM Relay stays de-energized. 4. Repeat Steps 2 and 3 until the desired delay time is obtained. 5. Tighten lock nut. 6089, p. 4-4 WABCO ~~ SECTION V ··. ·FIELD MAINTENANCE . j . , .. With the exception of replacing .,a ·fuse or repairing an obvious fault, ,such as a .broken- wi~e, it .. is recommended ·that a d,efective Motion Monitor 21 Unit be replaced with.a good unit. . 5.1 (: FUSE REPLACEMENT The fuse that protects the Motion Monitor~ circuitry is locat~d on the cover. Cause of overload should be determined and fixed before a new fuse is inserted. Replace the defective fuse only with one of the same value; 3 Amp. @ 125V, 3 AG, SLO-BLO (WABCO Part #BUJ085075-1020). 5.2 FIELD EQUIPMENT AND TESTS The following list of voltage measurements will enable maintenance personnel to distinguish between external wiring and MM-21 internal circuit problems. The following measurements are made with a track shunt applied at the point on the track that produces a 0.45 volt RMS signal across the transmitter lead~ terminals 5 and 71 with a battery voltage of 12 VDC across terminals 11 (+) and 9 (-). Meter-Simpson 260; or equivalent AAR TERMINAL 5 and 7 15 and 17 11 (+) and 9 (-) 6 (+) and 8 (-) 13 (+) and 11(-) 16 VOLTAGE REQUIREMENT 0.45V RMS 0.40V RMS 12V DC 6 to 7.5V DC with 5 Hz mod. 6 to av DC Open Monitoring of the 2 LED's on the cover of the Motion Monitor and a check on the state of the island and motion relays will indicate the condition of the Unit. With no track shunt applied, the two relays are to be in the energized state, the "ISLAND" LED indication on steady, and the "MOD CHECK" LED indicator on and off at a 5 Hz rate. 6089, p. 5-1 WABCC ~ 5.3 PERIODIC MAINTENANCE Regular inspection and corrective action ~hould be taken to keep the effective series loop rail resistance in each direction from the feed point of the Motion Monitor track circuit as low as possible. Good maintenance practices are encourged so as to maintain high ballast resistance, to insure integrity of the rail bonds, MM-21.rail connections and rail splices so as to maintain a low electrical resistance. 6089, p. 5-2 WABCCI 'V"+"'V' SECTION VI PC BOARD REPAIR IMPORTANT NOTE The WABCO Motion Monitor MM-21 has been designed in accordance with vital design principals. As with vital relays, the repair of motion monitors should be done by qualified personnel. For prompt repair service, please contact the appropriate salesperson for information on returning the defective unit. 6089, p. 6-1/2 WABCC ~MY' MOTION MONITOR. MM.-21 ASSEMBLY'; (DETAILED PARTS) Keyed to Fi~ure 7-1 DESCRIPTION ·ITEM WABCQ. .. Part No. ORDERING REFERENCE (Complete Units) , Motion Motion Motion Motion Motion Motion Monitor, MM-21, Monitor, MM-21, Monitor, MM-21, Monitor~ ,MM-21, Monitor,· MM:..21, Monitor, MM-21, 207 230 '390 405 570 630 Hz Hz Hz Hz H:z: Hz N451554-0101 N451554-0102 N451554-0103 N451554-0104 N451554-0105 N451554-0106 (External Uni ts) Relay, Motion Monitor, Type PN-150BH Relay Island, Type P~~l50BH Mounting, Relay Surge-Ripple Filter, 12VDC, 2.5A Track Coupling Unit Tuned Shunt: 207 Hz Unit 230 Hz Unit 390 Hz Unit 405 Hz Unit 570 Hz Unit 630 Hz Unit N322511-007 N322511..-.007 N349904 N451036-0702 N451039-2401 N451039-2402 N451039-2403 N451039-2404 N451039-2405 N451039-2406 . . 1 2 3 4 5 6 7 8 9 10 11 12 v . ' Signal P.C.B~, .207 Hz Signal P.C.B., 230 Hz. Signal P.C.B., 390 Hz Signal P.C.B., 405 Hz Signal P.C.B., 570 Hz Signal P • C . B. , 630 Hz Detector P.C.B. Box Cover P.C. Mtg. Bkt., Right P.C. Mtg. Bkt., Left Mtg.· Flange -· N451522-3502 N451522-3503 N451522-3504 N451522-3505 N451522-3506 N451522-3507 N451522-3301 R451555-0301 M45L555-0101 R451555-0201 R451555-0202 M451555-0401 6089, p. 7-1 WABCC ~'V"' MOTION MONITOR MM-21 ASSEMBLY (DETAILED PARTS) cont'd. ITEM 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 42 46 47 48 49 6089, p. 7-2 DESCRIPTION Terminal Block Terminal Washer Terminal Stud Nut Nut Diode, Light Em. MLED 650 Potentiometer, 100 Ohms, 2W Potentiometer, Dual, 500K/20K Fuse Holder Fuse, 3A Slo-Blo Liner Seal, Lead Cable Assy. Wire, No. 23 Terminal Jumper Screw, #8-32 x 1-~ Standoff Spacer Screw, #6-32 x 5/16 Lockwasher, #6 Nut, #6-32 Screw, #8-32 x 5/16 Lockwasher, #8 Screw, #10-32 x 5/16 Screw, #10-32 x ~ Fillister Head Lockwasher, #10 Screw, \-20 x 1-1/8 Nut, ~-20 Lock Wire, #22 Bare P.C.B., Island Ckt., 12.28 Hz (For 207 & 230 Hz) P.C.B., Island Ckt., 15.0 Hz (For 390 & 405 Hz) P.C.B., Island Ckt., 20.0 Hz (For 507 & 630 Hz) Bracket, Angle WABCO Part No. J77826 J47818 M380743 M029103 M029101 J726150-0112 J062554 J620850-0048 J071889 J710029 J475168 J07935l N451458-1601 A043013 Ml20343 J525111 J792737 J772378 J507193 J047713 J048148 J047714 J507268 Ml53231 J047715 J052508 J048203 A043183 N451522-3003 N451522-3004 N451522-3005 R451555-0203 WABCCl 13 12. *lfEF:. i =i ~ lI !:} .:' ~ A~£F. --- 18,J ~~:~ T_!, ' ~TttooE.\ 4 ~z DIA. A'ITli, Hot.I.# R,;F. ·1 [1 17(1f£,U, SQ(.. w1~E ~a L C-IIU.• .scA'ENS IIAID I ~l!vlE -~ltD SEAL• -~JILIN& AlfUS TO -ltlC Ml llont $160 OF 4 \ @> "\ I ;,, 'ZI @ @ ';; 1-r-' \~) "')I :,£1/(.., A'l',LY SEAL •J&rl'~ , ,,,,.. ,_ -$- ,#Nlfoll/111... " / @ ()I @@ \ /~\ I~ I 1 ., ., (Q> ~ \ (_) \ ___ - ,<, 'Z. ., ' -$- @ ._, 4{ -$- ....... A_.ll..... ·-·4'.., @ LI 1111,,aT/4-•U. @ @ SI ,, @ c \I IH -«tt, "9lh4N PIO. ~,.a.c. e :':,~~~ ~~.,.;-q~ .,.l't·MZ.ll. ~ ! t @ - R\Ja~ ...._,.,., I :::~M.";7 .:~~ €f:!j @foJ T€AlltlN/tL Wlf•H·~ t•, ii. ,.,.,,., ONLY ONI '6Q, .. ._ ..,,.JHl!'.U,I! 17 (70P l'IN-lt TtlrllT @ (o) L ~ ; z 4 (o) ) •i R£F. I ~ , -i,. ~ ~ 'nr--· li,d--~ ~ @ .............. IL-0 - - --~ c:i:-,@\:,'/V\ POSITION ISETWEEN Two WA&HfAS ' TIGHT£N TOP NUTS, 61/oWN THESE TER.HtNAJ.8 I,.,..,NUTS 8Loc.l(: J,/IIT @ Rff ONL'Y 111vrs OAl<-Y) •ND ) J ·\ ,\ [] ); ...._ I II -.MAltK PRODUCTIO .... :::-!I -, -~ J j BOARD # COO£ PER SCHEMi'!T'IC 111 THI! AREA, IN IIIACl( 1 )9CHAAACT£RS PE:R .$P£C, PM-9&2.3. 47 Bf\'EF. I ,r ''0 DE.TAILS AloT Slfow,J 48 @ T ti& r sec IILL a 4PL/le[$~/I ii:) e, ,_ '7 "'4T£611U.S Iii 0 ;f 0 l!IIMRO •2 D'-T"'1L$-T I j~ -5"°""" 11: I ··------' I (i~ Cf NT ff< 1"'510£ CASE IN.5Tl91.J. 5MCE/l$ .ETW/£&N P.c. JtlO«tnllL FL.ltNt,£ l!.OlflllDa PEfi' lu£h ..,, .. Figure 7-1. "• ~ -;:'J AF~i;.~;:T~os'X~::;"(;, ! MM-21 Motion Monitor Assembly 6089, p. 7-3/4 .\ j WABCO I- -~ ~l .i r-~~--- ·---@-------- --~~--------1 ~~ ~ -1 .i "J - - -- --, r.;- - - - - - £!3 "", l~1 I 1 +le:, •N7"3A (6.2V) I I +T1Uf' .. C2 100\Jf 10001 3A .. ...... ... !'2 II.If tN4003 p I 106 I TAB 3 oor39 oo I I f !iHIO f r-J--~o'---f-+-----------------~ lc'OIJ I f330 I I I f1N4003 I I BATT - I I ~ ... ... CH TP10 ' t1PS404A c1i ..."'' fil,!( ;~~o,rl:~. BATT - 3 "'-" ~· i. . e·..... .513 ..."" 2IJI' != 821( TPB 10K CJ L _ ~I~AL_!IO~ J,_No.1) owe f"451522-SH.35 ,------------- --, ,--------- £7 ...••• E• R31I ~ .. .. 3.6H£G cs, 820K ~ D4 I I Y C OET(CTOR BOARD (N0,2) o.1ur '"'"o!•c!"" .. TP4 R-- \ C21 me :J ___.i-J R~B TPl6 TP15nR35 O ]l u [ 0 018([ nR31n R37Ll U C C31L _J 32 / " " R48L T3 Q14 f \ [[ ] 023 9 R34 09 L ::J SCRl 02or= ~ _) oLJLJ + ~ TP9 .._ OE11 TP180 ........ r ~ ,Q \ J TP10 [ ~ Tl J [ + ...I OlO [I J ::J R17 RTl R18 R4 Tl/ \ ~ 111111:1" z c: _/ Rl C3 W Y BK R C4 · nr,04 C7 c n \. n r --,., LJl=I + ....r+ L ::J n O cs R19 R6 E7Q u nn Cl ::J TP1 C2 n LJ 0 nn:01 I _J a1r ' ./cs n R5() LJ LJ ElQ ~3 TP140 ° R3 u LJLJ:02 OtP2 OtP3 ·i .·:,. ·;: ·:l :.~ } r :J :~ Figure 7-4. Detector P.C.B. Layout 6-089, p. 7-17/18 ISLAND P.C.B. ASSEMBLY (DETAILED PARTS) Keyed to Figure 7-5 ITEM C4 DESCRIPTION WABCO Part No. C6 C7 C8,Cl0,Cl8 C9 Cll,Cl2, Cl3,Cl4 Cl5 Cl6 Cl9 C20 C21 C22 Capacitor, Capacitor, Capacitor, Capacitor, Capacitor, Capacitor, 1,000 Pfd., SOOV 1 Mfd., 200V 1 Mfd., 200V 1 Mfd., 35V 100 Mfd., 20V 10 Mfd., 20V Capacitor, Gapacitor, Capacitor, Capacitor, Capacitor, Capacitor, Capacitor, .01 ~fd., lOOV .068 Mfd., lOOV 15 Mfd., 20V .022 Mfd., lOOV 1,000 Pfd., SOOV 8 Mfd., ioov 2 Mfd., 200V Dl,D2,Dl0, Dll,Dl2, Dl3 D3,D4,D6 D5,D9 D7 D8 Diode, Diode, Diode, Diode, Diode, El-E9 Lug, Turret J714159 Ll L4 Pot Core Assembly Induct9r, 10,00p UH N451030-0317 J703315 Ql,Q2,Q3, Q4 Q5,Q9 Q6 Q7 Q8,Ql0,Qll Ql2 Ql3 Transistor, Transistor, Transistor, Transistor, Transistor, Transistor, Transistor, J731398-0040 J731283 J731186 J731291 J731282 J731427 J731398-0056 cs Rl, R2, R4, Rl7,R34, R38 R3,Rl6 R5,R8,R9, Rl3,Rl4 RlO 1N914A 1N4003 Zener, 1N748A Zener, 1N5359B Zener, 1N5341B 2N5962-18 2N3644 2N2270 2N4037 2N3643 MJlOOO MJ900 J700612 J702280 J709145-0211 J706387 J706416 J706373 J706589 J706569 J706891 J706789 J700612 .J706816 J706815 J726031 J723555 J726150-0071 J726150-0051 J726150-0031 Resistor, lM, ~w Resistor, 2.2M, ~w J720839 J720845 Resistor, lOOK, ~w Resistor, Silicon, 500 Ohms, ~W J720838 J735260 6089, p. 7-19 / WABCD 'V'"•~ ISLAND P •.C.B. ASSEMBLY (DETAILED PARTS) cont'd. DESCRIPTION ITEM WABCO Part No. Rll R6,Rl2 Rl5,Rl8, Rl9,R20, R37 R21 R22 R23 R24 R25 R26 R27, R33, R36 R28 R29 R30 R31 R32 R39 R35,R7 Resistor, TBD Resistor, lK, ~W J720882 Resistor, Resistor, Resistor, Resistor, Resistor, Resistor, Resistor, lOK, ~W 470 Ohms, ~W 1.5K, ~W 10 Ohms, ~W 47 Ohms, 2W 200 Ohms, 2W 47 Ohms, ~W J720883 J721065 J721064 J720881 J721450 J721161 J721189 Resistor, Resistor, Resistor, Resistor, Resistor, Resistor, Resistor, Resistor, 8,200 Ohms, ~W 68 Ohms, ~W 2,200 Ohms, ~W 820 Ohms, ~W 47K, ~W 33,000 Ohms, ~W 1,200 Ohms, ~W 3.3K, ~W J720775 J721510 J720842 J720774 J720846 J720889 J720820 J720888 Tl T2 T3 T4 Pot Core Assembly Pot Core Assembly Pot Core Assembly Transformer N451030-3531 N451030-3504 N451030-0314 N437365 FREQUENCY DETERMINING COMPONENTS FOR: ISLAND P.C.B. 451522-3003 ( 12 • 2 8 Khz • ) Cl C2 C3 Cl7 L2 L3 6089, p. 7-20 Capacitor, .01 Mfd. Capacitor, 50 Pfd. Capacitor, .0027 Mfd. Capacitor, .015 Mfd. Pot Core Assembly Pot Core Assembly J709145-0134 J709145-0023 J709145-0126 J709145-0035 N451030-0320 N451030-0324 ISLAND P.C.B. ASSEMBLY (DETAILED PARTS) cont'd. ITEM DESCRIPTION WABCO Part No. FREQUENCY DETERMINING COMPONENTS FOR: ISLAND P.C.B. 451522-3004 (15 Khz.) Cl C2 C3 C17 L2 L3 Capacitor, .0068 Mfd. Capacitor, 39 Pfd. Capacitor, .0018 Mfd. Capacitor, .01 Mfd. Pot Core Assembly Pot Core Assembly J709145-0132 J706938 J709145-0124 J709145-0134 N451030-0321 N451030-0325 FREQUENCY DETERMINING COMPONENTS FOR: ISLAND P.C.B. 45122-3005 (2 0 Khz.} Cl C2 C3 C17 L2 L3 Capacitor, .0039 Mfd. Capacitor, 22 Pfd. Capacitor, .001 Mfd. apacitor, .0056 Mfd. Pot Core Assembly Pot Core Assembly J709145-0128 J706950 J709145-0068 J709145-0131 N451030-0322 N451030-0326 6089, p. 7-21/22 ~ ~ ~ -· I I ~ 8 nu +nu'\....J• n.r , C) 01 °2 C9LJ .I TPJ O [ C7J n :E - IC1 +[ Al n u oJr'\ R13u 05 cR14 L :J [ J L C J C12 ·-J' ·;g n lun h""'---- RlLJnn nn C15 R19 c £3 c5 nR 1 + C L :J ·1 .1 c• Jc1:8 11 2 2 R10 R5 m [ n a [: :J c :i L4 ~ 14 111 ,,' :J C4u (01 J LJ J2 ~ i=i R21 o1 CR1~ O&u C14 04L/ CR20 R1snn()o5 LIU R18 ( \ CJ R26CD8 £1 C18LJ O £& 0 £8 \_ _/ 0 Figure 7-5. UD9 n 0 (T3 RJOn TP2 0 "'---- R28 u nu A C17 }Rl \ -.....[:r10 R32 l , \._ _), [ R27 ,..... 1 "--- r2 o10 ) c :::::tgu C :J R37QE9 cu V,c2 ~1,, cR34:i I... mn r\... .,; ~1 c20 c :J u 011 kt_) ~ C22 R35 ~ c ::1. . . LJ 0 R1U( \LJ E7 r TPh R25n ou ( '-- __,,/ 06 C\:J L2 }" + Cl ~1 \ DR I £50~ ...Q!2• mn ( 08\ r~LJ n D12n ~ F==I uD13 -- 013 012 C21 Island P.C.B. Layout 6089, p. 7-23/24 WABCD "V'#V' SECTION VIII APPLICATIONS For other typical application circuits, consult Manual SM-6089A. For special applications, contact your nearest Union Switch & Signal Division Sales Office. '· 6089 I P• 8-1/2 , WABCCJ An American-Standard Company UNION SWITCH & SIGNAL DIVISION WESTINGHOUSE AIR BRAKE COMPANY Swissvale, PA 15218